High-voltage cable withstand voltage test device

Abstract

The utility model relates to the technical field of high-voltage cable tests, in particular to a high-voltage cable withstand voltage test device, which comprises a mounting disc, a clamping block and a transmission assembly, a plurality of first wire fixing holes are formed in the circumferential outer wall of the mounting disc, an annular groove is formed in the circumferential outer wall of the mounting disc, and the annular groove penetrates through the first wire fixing holes and is connected with the first wire fixing holes. The clamping blocks are symmetrically arranged in the first wire fixing holes in pairs, and the inner walls of the clamping blocks are fixedly connected with rotating shafts. According to the device provided by the utility model, a plurality of strands of wires at the end part of a cable are respectively pressed in the first wire fixing holes in the mounting disc, one clamping block in the first wire fixing hole is extruded by the plurality of strands of wires, the clamping block drives the rotating shaft to rotate during mounting, and the clamping block presses the wires in the first wire fixing hole under the torsion action of the torsion spring, so that the position of a wire head does not need to be accurate; the electric wire can be quickly clamped only by bending the electric wire into the first wire fixing hole, the operation is simple, and the installation speed is relatively high.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage cable testing technology, and more specifically, to a high-voltage cable withstand voltage testing device. Background Technology

[0002] A high-voltage cable withstand voltage tester is a device specifically designed to test the insulation performance of high-voltage cables. It simulates overvoltage conditions that the cable might experience during actual operation by applying an AC or DC voltage higher than the cable's rated voltage, in order to evaluate the cable's insulation strength and reliability.

[0003] During the high-voltage cable withstand voltage test, it is necessary to fix the multiple wires inside both ends of the cable. The existing technology announcement document CN221485479U discloses a cable withstand voltage test device. In this device, a fixing groove is opened on the fixing plate. The multiple wires need to be passed through the fixing groove, and the wires are squeezed by the elastic and telescopic second arc-shaped contact head to fix them in the fixing groove. However, the wires inside the cable are usually quite rigid and difficult to bend during installation. When inserting the ends of the multiple wires into the fixing groove, the position of the wire ends needs to be precisely controlled. The operation steps are cumbersome and time-consuming. Utility Model Content

[0004] This utility model proposes a high-voltage cable withstand voltage test device. By pressing the device into the first wire fixing hole on the mounting plate, the wire is pressed into the first wire fixing hole by the clamping block, which can quickly clamp the wire. The operation is simple and the installation speed is fast.

[0005] This utility model proposes a high-voltage cable withstand voltage test device, including a mounting plate, a clamping block, and a transmission assembly;

[0006] The mounting plate has a plurality of first wire fixing holes on its outer circumference and an annular groove on its outer circumference, the annular groove passing through and connected to the first wire fixing holes.

[0007] The clamping blocks are symmetrically arranged in pairs in the first fixing hole. The inner wall of each clamping block is fixedly connected to a rotating shaft. The two ends of the rotating shaft pass through the annular groove and are rotatably connected to it. A limit sleeve is fixedly connected to one end of the rotating shaft located in the same first fixing hole. A torsion spring is sleeved on the outer wall of the rotating shaft end. A gear is fixedly connected to the other end of the rotating shaft located in the same first fixing hole.

[0008] The transmission assembly is used to drive the gear to rotate.

[0009] Preferably, one end of the torsion spring is fixedly connected to the limiting sleeve, and the other end of the torsion spring is fixedly connected to the mounting plate.

[0010] Preferably, the transmission assembly includes a guide frame, a toothed plate slidably connected to the inner wall of the guide frame, the toothed plate meshing with a gear, slide rods fixedly connected to the inner walls of both sides of the guide frame, springs sleeved on the outer walls of the slide rods, and sliders slidably connected to the outer walls of the slide rods, the ends of the sliders being fixedly connected to the toothed plate.

[0011] Preferably, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the guide frame.

[0012] Preferably, a rotatable ball bearing is embedded at one end of the toothed plate near the center of the mounting plate end face.

[0013] Preferably, the system further includes an operating table, a fixed plate fixedly connected to the top of the operating table, an end of the fixed plate fixedly connected to the mounting plate, a support plate fixedly connected to the bottom of the operating table, a limit groove formed on the top of the operating table, two mounting plates slidably connected to the inner wall of the limit groove, a stop rod fixedly connected to the inner wall of the mounting plate, a pressing block fixedly connected to the end of the stop rod, and a driving assembly installed on the top of the operating table for pushing the mounting plates to move.

[0014] Preferably, the drive assembly includes a stepper motor, a bidirectional threaded rod, and a support block. The support block and the stepper motor are both fixedly mounted on the top of the operating table. One end of the bidirectional threaded rod is rotatably connected to the support block, and the other end of the bidirectional threaded rod is fixedly connected to the output end of the stepper motor. The bidirectional threaded rod is threadedly connected to the mounting plate.

[0015] Preferably, a support plate is fixedly connected to the inner wall of the limiting groove, a second fixing hole is provided on the top of the support plate, a stop block is slidably connected to the side wall of the support plate, the end of the stop block extends into the second fixing hole, an ear plate is fixedly connected to the side wall of the support plate, an adjusting handwheel is threadedly connected to the inner wall of the ear plate, and the end of the adjusting handwheel is fixedly connected to the stop block.

[0016] The beneficial effects of this utility model, achieved through the above technical solution, are as follows:

[0017] 1. Press the multiple strands of wire at the end of the cable into the first fixing hole on the mounting plate. The multiple strands of wire squeeze one of the clamps in the first fixing hole. During installation, the clamp drives the shaft to rotate. Under the torque of the torsion spring, the clamp presses the wire into the first fixing hole. There is no need to accurately position the wire end. Just bend the wire into the first fixing hole to quickly clamp the wire. The operation is simple and the installation speed is fast.

[0018] 2. The stepper motor drives the extrusion block to move, and the extrusion block extrudes the ball at the end of the toothed plate. At this time, the toothed plate slides along the inner wall of the guide frame. When the toothed plate slides, it drives the slider to slide along the outer wall of the slide rod. At this time, the spring is compressed, and the toothed plate drives the gear to rotate. The gear drives another clamping block in the first wire fixing hole to rotate through the rotating shaft. This design can further extrude and fix the wire.

[0019] 3. When the rotating block driven by the gear rotates in the opposite direction and releases the clamp on the wire, the multiple wires can be pulled out of the first wire fixing hole by pulling the cable, thus achieving quick disassembly. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the mounting structure of the toothed plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the mounting structure of the abutment block of this utility model.

[0024] In the diagram: 1. Operating platform; 2. Support plate; 3. Limiting groove; 4. Support block; 5. Bidirectional threaded rod; 6. Stepper motor; 7. Fixing plate; 8. Mounting plate; 9. Mounting plate; 10. Support rod; 11. Pressing block; 12. First fixing hole; 13. Annular groove; 14. Clamping block; 15. Rotating shaft; 16. Gear; 17. Torsion spring; 18. Limiting sleeve; 19. Guide frame; 20. Slide rod; 21. Spring; 22. Slider; 23. Gear plate; 24. Ball bearing; 25. Support plate; 26. Second fixing hole; 27. Support block; 28. Ear plate; 29. ​​Adjusting handwheel. Detailed Implementation

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the term "fixed connection" should be interpreted broadly. For example, "fixed connection" can mean fixed installation, detachable connection, or integral connection; it can mean mechanical connection or electrical connection; it can mean direct connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figure 1 and Figure 2As shown, a high-voltage cable withstand voltage test device includes a mounting plate 8, a clamping block 14, and a transmission assembly;

[0028] The outer circumference of the mounting plate 8 is provided with a plurality of first wire fixing holes 12, and the outer circumference of the mounting plate 8 is provided with an annular groove 13, which passes through the first wire fixing holes 12 and is connected thereto.

[0029] Two clamping blocks 14 are symmetrically arranged in the first wire fixing hole 12. A rotating shaft 15 is fixedly connected to the inner wall of each clamping block 14. The two ends of the rotating shaft 15 pass through the annular groove 13 and are rotatably connected to it. A limit sleeve 18 is fixedly connected to the end of one rotating shaft 15 located in the same first wire fixing hole 12. A torsion spring 17 is sleeved on the outer wall of the end of the rotating shaft 15. A gear 16 is fixedly connected to the end of the other rotating shaft 15 located in the same first wire fixing hole 12. One end of the torsion spring 17 is fixedly connected to the limit sleeve 18. The other end of the torsion spring 17 is fixedly connected to the mounting plate 8.

[0030] A clamping block 14 inside the first wire fixing hole 12 is subjected to the elastic force of the torsion spring 17, which can first clamp the wire and pre-fix it;

[0031] When the wire is bent into the first wire fixing hole 12, the gear 16 is pushed to rotate, causing another clamping block 14 in the first wire fixing hole 12 to rotate towards the side closer to the wire, thereby firmly pressing the wire into the first wire fixing hole 12.

[0032] When the clamp 14 rotates in the opposite direction and releases its grip on the wire, the multiple wires can be detached from the first wire fixing hole 12 by pulling the cable, thus achieving quick disassembly.

[0033] The transmission assembly is used to drive gear 16 to rotate.

[0034] In this embodiment, as Figure 2 and Figure 3 As shown, the transmission assembly includes a guide frame 19, a toothed plate 23 slidably connected to the inner wall of the guide frame 19, the toothed plate 23 meshing with the gear 16, slide rods 20 fixedly connected to the inner walls of both sides of the guide frame 19, springs 21 sleeved on the outer walls of the slide rods 20, sliders 22 slidably connected to the outer walls of the slide rods 20, the end of the slider 22 fixedly connected to the toothed plate 23, one end of the spring 21 fixedly connected to the slider 22, and the other end of the spring 21 fixedly connected to the guide frame 19;

[0035] The transmission structure achieves power transmission through the meshing of the toothed plate 23 and the gear 16. The structure is compact and reduces unnecessary space occupation.

[0036] In this embodiment, as Figure 3 As shown, a rotatable ball bearing 24 is embedded at one end of the toothed plate 23 near the center of the end face of the mounting plate 8.

[0037] The design of the ball bearing 24 can reduce the friction between the extrusion block 11 and the toothed plate 23, thereby improving the stability of the structural movement.

[0038] In this embodiment, as Figure 1 As shown, it also includes an operating table 1. A fixed plate 7 is fixedly connected to the top of the operating table 1. The end of the fixed plate 7 is fixedly connected to the mounting plate 8. A support plate 2 is fixedly connected to the bottom of the operating table 1. A limit groove 3 is opened on the top of the operating table 1. Two mounting plates 9 are slidably connected to the inner wall of the limit groove 3. A push rod 10 is fixedly connected to the inner wall of the mounting plate 9. A pressing block 11 is fixedly connected to the end of the push rod 10. A drive assembly is installed on the top of the operating table 1. The drive assembly is used to push the mounting plate 9 to move. The pressing block 11 is shaped like a frustum, thereby realizing the step-by-step pressing of the ball 24, so that the toothed plate 23 can drive the gear 16 to rotate.

[0039] In this embodiment, as Figure 1 As shown, the drive assembly includes a stepper motor 6, a bidirectional threaded rod 5, and a support block 4. The support block 4 and the stepper motor 6 are both fixedly mounted on the top of the operating table 1. One end of the bidirectional threaded rod 5 is rotatably connected to the support block 4, and the other end of the bidirectional threaded rod 5 is fixedly connected to the output end of the stepper motor 6. The bidirectional threaded rod 5 is threadedly connected to the mounting plate 9.

[0040] In this embodiment, as Figure 1 and Figure 4 As shown, a support plate 25 is fixedly connected to the inner wall of the limiting groove 3. A second wire fixing hole 26 is opened on the top of the support plate 25. A stop block 27 is slidably connected to the side wall of the support plate 25. The end of the stop block 27 extends into the second wire fixing hole 26. An ear plate 28 is fixedly connected to the side wall of the support plate 25. An adjusting handwheel 29 is threadedly connected to the inner wall of the ear plate 28. The end of the adjusting handwheel 29 is fixedly connected to the stop block 27.

[0041] By fixing the middle of the cable, the cable can be supported, reducing the pressure on the two ends of the cable.

[0042] Working principle: Place the middle part of the cable in the second fixing hole 26, and push the abutment block 27 to squeeze and fix the cable by rotating the adjusting handwheel 29;

[0043] The multiple strands of wire at the end of the cable are pressed into the first wire fixing hole 12 on the mounting plate 8. The multiple strands of wire squeeze one of the clamps 14 in the first wire fixing hole 12. During installation, the clamp 14 drives the rotating shaft 15 to rotate. Under the torque of the torsion spring 17, the clamp 14 presses the wire into the first wire fixing hole 12, which can quickly clamp the wire.

[0044] Stepper motor 6 drives bidirectional threaded rod 5 to rotate, mounting plate 9 slides along the inner wall of limiting groove 3, and through mounting plate 9 pushes extrusion block 11 to extrude ball 24 at end of toothed plate 23 via push rod 10. At this time, toothed plate 23 slides along inner wall of guide frame 19. When toothed plate 23 slides, it drives slider 22 to slide along outer wall of slide rod 20. At this time, spring 21 is compressed, and toothed plate 23 drives gear 16 to rotate. Gear 16 drives another clamping block 14 in first wire fixing hole 12 to rotate through rotating shaft 15, thereby further extruding and reinforcing the wire.

[0045] When the stepper motor 6 rotates in the reverse direction, the pressing block 11 moves in the reverse direction. At this time, under the elastic force of the spring 21, the toothed plate 23 moves in the reverse direction, causing the clamping block 14 to rotate in the reverse direction, releasing the clamping of the wire, so that the operator can quickly pull the wire out of the first wire fixing hole 12 and quickly disassemble it.

[0046] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A high-voltage cable withstand voltage testing device, characterized in that, include: The mounting plate (8) has a plurality of first wire fixing holes (12) on its outer circumference and an annular groove (13) on its outer circumference, which passes through and is connected to the first wire fixing holes (12). Clamping blocks (14) are symmetrically arranged in pairs in the first wire fixing hole (12). The inner walls of each clamping block (14) are fixedly connected with a rotating shaft (15). The two ends of the rotating shaft (15) pass through the annular groove (13) and are rotatably connected to it. The end of one rotating shaft (15) located in the same first wire fixing hole (12) is fixedly connected with a limit sleeve (18). The outer wall of the end of the rotating shaft (15) is sleeved with a torsion spring (17). The end of the other rotating shaft (15) located in the same first wire fixing hole (12) is fixedly connected with a gear (16). A transmission assembly for driving the gear (16) to rotate.

2. The high-voltage cable withstand voltage testing device according to claim 1, characterized in that: One end of the torsion spring (17) is fixedly connected to the limiting sleeve (18), and the other end of the torsion spring (17) is fixedly connected to the mounting plate (8).

3. The high-voltage cable withstand voltage testing device according to claim 2, characterized in that: The transmission assembly includes a guide frame (19), a toothed plate (23) is slidably connected to the inner wall of the guide frame (19), the toothed plate (23) meshes with a gear (16), a slide rod (20) is fixedly connected to the inner walls on both sides of the guide frame (19), a spring (21) is sleeved on the outer wall of the slide rod (20), a slider (22) is slidably connected to the outer wall of the slide rod (20), and the end of the slider (22) is fixedly connected to the toothed plate (23).

4. The high-voltage cable withstand voltage testing device according to claim 3, characterized in that: One end of the spring (21) is fixedly connected to the slider (22), and the other end of the spring (21) is fixedly connected to the guide frame (19).

5. The high-voltage cable withstand voltage testing device according to claim 4, characterized in that: The toothed plate (23) has a rotatable ball bearing (24) embedded at one end near the center of the end face of the mounting plate (8).

6. The high-voltage cable withstand voltage testing device according to claim 5, characterized in that: It also includes an operating table (1), on the top of which a fixed plate (7) is fixedly connected, and the end of the fixed plate (7) is fixedly connected to the mounting plate (8). A support plate (2) is fixedly connected to the bottom of the operating table (1). A limit groove (3) is opened on the top of the operating table (1). Two mounting plates (9) are slidably connected to the inner wall of the limit groove (3). A push rod (10) is fixedly connected to the inner wall of the mounting plate (9). A pressing block (11) is fixedly connected to the end of the push rod (10). A drive assembly is installed on the top of the operating table (1). The drive assembly is used to push the mounting plate (9) to move.

7. The high-voltage cable withstand voltage testing device according to claim 6, characterized in that: The drive assembly includes a stepper motor (6), a bidirectional threaded rod (5), and a support block (4). The support block (4) and the stepper motor (6) are both fixedly installed on the top of the operating table (1). One end of the bidirectional threaded rod (5) is rotatably connected to the support block (4), and the other end of the bidirectional threaded rod (5) is fixedly connected to the output end of the stepper motor (6). The bidirectional threaded rod (5) is threadedly connected to the mounting plate (9).

8. The high-voltage cable withstand voltage testing device according to claim 7, characterized in that: A support plate (25) is fixedly connected to the inner wall of the limiting groove (3). A second fixing hole (26) is opened on the top of the support plate (25). A stop block (27) is slidably connected to the side wall of the support plate (25). The end of the stop block (27) extends into the second fixing hole (26). An ear plate (28) is fixedly connected to the side wall of the support plate (25). An adjusting handwheel (29) is threadedly connected to the inner wall of the ear plate (28). The end of the adjusting handwheel (29) is fixedly connected to the stop block (27).

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